With new Covid-19 subvariants spreading, public health experts are calling for indoor air quality improvements to ensure that classrooms are safe today and going forward.

I have four school-age children, and during the Covid-19 waves that rippled through the school year, every week or so at least one of their classmates was testing positive, which meant my wife and I then had to decide to what degree each member of our household should isolate themselves. It felt never-ending. So I know firsthand the upheaval and deprivation the pandemic has caused for students, parents, teachers and the broader school community.